cutepuppy671
n00b
- Joined
- Dec 15, 2008
- Messages
- 10
I recently got a sapphire ATI radeon HD 3850 AGP and it runs many games really well
I can even max out crysis warhead with no lag and hold 20-25FPS at 1440x900
But my problems start with games using opengl, mainly second life
I get 6-15FPS and it is very laggy.
And if I try to turn or move, the game goes down to 1-3 FPS and hangs and stutters as the scene is rendered (probably due to it making almost no use of the video memory (I have noticed this with many opengl apps)
When I checked using rivatner, the GPU usage of the card was at 30% and the game was only using 5.44MB memory
With my old geforce 6800, the game was able to use all of the 256mb memory
And my average framerate with it was 25-30FPS
I dualboot multiple copies of windows xp, and I recently installed another XP to make sure it wasnt a problem with moving from nvidia to ATI
Still had the same problem
Why does the card refuse to use more than 5.44MB video memory with many open gl apps
My system specs:
Motherboard:
CPU Type DualCore AMD Opteron 170, 2717 MHz (9.5 x 286)
Motherboard Name Asus A8V (5 PCI, 1 AGP, 4 DDR DIMM, Audio, Gigabit LAN)
Motherboard Chipset VIA K8T800Pro, AMD Hammer
System Memory 2048 MB (PC3200 DDR SDRAM)
DIMM1: G Skill NS 1 GB PC3200 DDR SDRAM (2.5-3-3-6 @ 200 MHz)
DIMM2: G Skill NS 1 GB PC3200 DDR SDRAM (2.5-3-3-6 @ 200 MHz)
Display:
Video Adapter ATI Radeon HD 3800 Series (512 MB)
Screenshot of sl and riva tuner http://img410.imageshack.us/img410/4189/39558766kj8.jpg
I will be testing more opengl games but so far it seems that they refuse to use texture memory
so games can run ok if your not moving and just looking at 1 thing but once you move or turn the cam, the lack of use of the texture memory causes extreme lag, like it will freeze for like 2 -5 seconds in some cases while it loads the view
it seems to not use full gpu usage due to probably a bottle neck from not using the videocards texture memory.
just tried cinebench open gl test, it got aroud 43 FPS, low cpu usage and low GPU usage, barely any texture memory usage
I can even max out crysis warhead with no lag and hold 20-25FPS at 1440x900
But my problems start with games using opengl, mainly second life
I get 6-15FPS and it is very laggy.
And if I try to turn or move, the game goes down to 1-3 FPS and hangs and stutters as the scene is rendered (probably due to it making almost no use of the video memory (I have noticed this with many opengl apps)
When I checked using rivatner, the GPU usage of the card was at 30% and the game was only using 5.44MB memory
With my old geforce 6800, the game was able to use all of the 256mb memory
And my average framerate with it was 25-30FPS
I dualboot multiple copies of windows xp, and I recently installed another XP to make sure it wasnt a problem with moving from nvidia to ATI
Still had the same problem
Why does the card refuse to use more than 5.44MB video memory with many open gl apps
My system specs:
Motherboard:
CPU Type DualCore AMD Opteron 170, 2717 MHz (9.5 x 286)
Motherboard Name Asus A8V (5 PCI, 1 AGP, 4 DDR DIMM, Audio, Gigabit LAN)
Motherboard Chipset VIA K8T800Pro, AMD Hammer
System Memory 2048 MB (PC3200 DDR SDRAM)
DIMM1: G Skill NS 1 GB PC3200 DDR SDRAM (2.5-3-3-6 @ 200 MHz)
DIMM2: G Skill NS 1 GB PC3200 DDR SDRAM (2.5-3-3-6 @ 200 MHz)
Display:
Video Adapter ATI Radeon HD 3800 Series (512 MB)
Screenshot of sl and riva tuner http://img410.imageshack.us/img410/4189/39558766kj8.jpg
I will be testing more opengl games but so far it seems that they refuse to use texture memory
so games can run ok if your not moving and just looking at 1 thing but once you move or turn the cam, the lack of use of the texture memory causes extreme lag, like it will freeze for like 2 -5 seconds in some cases while it loads the view
it seems to not use full gpu usage due to probably a bottle neck from not using the videocards texture memory.
just tried cinebench open gl test, it got aroud 43 FPS, low cpu usage and low GPU usage, barely any texture memory usage